Re: m68k toolchain

[Segher Boessenkool <segher at kernel dot crashing dot org>]

On Wed, Mar 23, 2016 at 08:35:51PM +0100, Waldemar Brodkorb wrote:
> > IIRC, the right way to do this is to first use glibc's install-headers
> > target to get the header files installed, then you can build gcc.
> 
> It is a method of building a cross-toolchain in a let's say "short"
> way.

One that works without libc, yeah.

> It reduces the toolchain build time and is used by buildroot
> and other toolchain building systems. It works fine for most of the
> supported Linux architectures. It only fails for m68k, ia64 and
> tile. As ia64 and tile is not supported by Buildroot, I have'nt
> reported it, yet.

I used to have a patch for ia64 but do not carry it anymore; I think
it was fixed (but I cannot find the patch that did, ugh).

Here is a tile patch, enjoy.


Segher

---
 gcc/config/tilegx/linux.h      | 2 +-
 libgcc/config/tilepro/atomic.h | 3 ++-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/gcc/config/tilegx/linux.h b/gcc/config/tilegx/linux.h
index f68b044..d648560 100644
--- a/gcc/config/tilegx/linux.h
+++ b/gcc/config/tilegx/linux.h
@@ -55,7 +55,7 @@
 /* For __clear_cache in libgcc2.c.  */
 #ifdef IN_LIBGCC2
 
-#include <arch/icache.h>
+//#include <arch/icache.h>
 
 /* Use the minimum page size of 4K.  Alternatively we can call
    getpagesize() but it introduces a libc dependence.  */
diff --git a/libgcc/config/tilepro/atomic.h b/libgcc/config/tilepro/atomic.h
index 78fa9a9..43d9828 100644
--- a/libgcc/config/tilepro/atomic.h
+++ b/libgcc/config/tilepro/atomic.h
@@ -93,7 +93,8 @@
 #endif
 
 #ifdef __tilegx__
-#include <arch/spr_def.h>
+//#include <arch/spr_def.h>
+#define SPR_CMPEXCH_VALUE 0x2780
 #else
 #include <asm/unistd.h>
 #endif
-- 
1.9.3